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/*
* Copyright (c) 2020-2021, the SerenityOS developers.
* Copyright (c) 2021, Sam Atkins <atkinssj@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullOwnPtrVector.h>
#include <AK/Vector.h>
#include <LibWeb/CSS/Parser/DeclarationOrAtRule.h>
#include <LibWeb/CSS/Parser/StyleBlockRule.h>
#include <LibWeb/CSS/Parser/StyleComponentValueRule.h>
#include <LibWeb/CSS/Parser/StyleDeclarationRule.h>
#include <LibWeb/CSS/Parser/StyleFunctionRule.h>
#include <LibWeb/CSS/Parser/StyleRule.h>
#include <LibWeb/CSS/Parser/Tokenizer.h>
#include <LibWeb/CSS/Selector.h>
namespace Web::CSS {
class CSSStyleSheet;
class CSSRule;
class CSSStyleRule;
struct StyleProperty;
class ParsingContext {
public:
ParsingContext();
explicit ParsingContext(DOM::Document const&);
explicit ParsingContext(DOM::ParentNode const&);
bool in_quirks_mode() const;
URL complete_url(String const&) const;
private:
const DOM::Document* m_document { nullptr };
};
class Parser {
public:
Parser(ParsingContext const&, StringView const& input, String const& encoding = "utf-8");
~Parser();
// The normal parser entry point, for parsing stylesheets.
NonnullRefPtr<CSSStyleSheet> parse_as_stylesheet();
// For the content of at-rules such as @media. It differs from "Parse a stylesheet" in the handling of <CDO-token> and <CDC-token>.
NonnullRefPtrVector<CSSRule> parse_as_list_of_rules();
// For use by the CSSStyleSheet#insertRule method, and similar functions which might exist, which parse text into a single rule.
RefPtr<CSSRule> parse_as_rule();
// Used in @supports conditions. [CSS3-CONDITIONAL]
Optional<StyleProperty> parse_as_declaration();
// For the contents of a style attribute, which parses text into the contents of a single style rule.
Vector<StyleProperty> parse_as_list_of_declarations();
// For things that need to consume a single value, like the parsing rules for attr().
Optional<StyleComponentValueRule> parse_as_component_value();
// For the contents of presentational attributes, which parse text into a single declaration’s value, or for parsing a stand-alone selector [SELECT] or list of Media Queries [MEDIAQ], as in Selectors API or the media HTML attribute.
Vector<StyleComponentValueRule> parse_as_list_of_component_values();
Vector<Vector<StyleComponentValueRule>> parse_as_comma_separated_list_of_component_values();
Optional<Selector> parse_single_selector(Vector<StyleComponentValueRule> parts, bool is_relative = false);
// FIXME: https://www.w3.org/TR/selectors-4/
// Contrary to the name, these parse a comma-separated list of selectors, according to the spec.
Vector<Selector> parse_a_selector();
Vector<Selector> parse_a_selector(Vector<Vector<StyleComponentValueRule>>&);
Vector<Selector> parse_a_relative_selector();
bool match_a_selector_against_an_element() { return false; }
bool match_a_selector_against_a_pseudo_element() { return false; }
bool match_a_selector_against_a_tree() { return false; }
// FIXME: https://drafts.csswg.org/css-backgrounds-3/
static Optional<String> as_valid_background_repeat(String input) { return input; }
static Optional<String> as_valid_background_attachment(String input) { return input; }
static Optional<String> as_valid_background_position(String input) { return input; }
static Optional<String> as_valid_background_clip(String input) { return input; }
static Optional<String> as_valid_background_origin(String input) { return input; }
static Optional<String> as_valid_background_size(String input) { return input; }
static Optional<String> as_valid_border_style(String input) { return input; }
static Optional<String> as_valid_border_image_repeat(String input) { return input; }
void dump_all_tokens();
private:
Token next_token();
Token peek_token();
Token current_token();
void reconsume_current_input_token();
NonnullRefPtrVector<StyleRule> consume_a_list_of_rules(bool top_level);
NonnullRefPtr<StyleRule> consume_an_at_rule();
RefPtr<StyleRule> consume_a_qualified_rule();
Vector<DeclarationOrAtRule> consume_a_list_of_declarations();
Optional<StyleDeclarationRule> consume_a_declaration(Vector<StyleComponentValueRule>);
Optional<StyleDeclarationRule> consume_a_declaration();
StyleComponentValueRule consume_a_component_value();
NonnullRefPtr<StyleBlockRule> consume_a_simple_block();
NonnullRefPtr<StyleFunctionRule> consume_a_function();
RefPtr<CSSRule> convert_rule(NonnullRefPtr<StyleRule>);
ParsingContext m_context;
Tokenizer m_tokenizer;
Vector<Token> m_tokens;
int m_iterator_offset { -1 };
};
}
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